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Ubuntu 25.10: Samba Critical Issues USN-7826-1 CVE-2025-9640 CVE-2025-10230

ubuntu
Calendar Grey October 16, 2025
Dist Ubuntu Esm H88
Ubuntu releases have fixed multiple security issues in Samba that could lead to sensitive data exposure or arbitrary code execution.
Several security issues were fixed in Samba.

Summary

A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 25.10 - Ubuntu 25.04 - Ubuntu 24.04 LTS - Ubuntu 22.04 LTS Summary: Several security issues were fixed in Samba. Software Description: - samba: SMB/CIFS file, print, and login server for Unix Details: Andrew Walker discovered that Samba incorrectly initialized memory in the vfs_streams_xattr module. An authenticated attacker could possibly use this issue to obtain sensitive information. (CVE-2025-9640) Igor Morgenstern discovered that Samba incorrectly handled names passed to the WINS hook program. An attacker could possibly use this issue to execute arbitrary code. (CVE-2025-10230)

Update Instructions

The problem can be corrected by updating your system to the following package versions: Ubuntu 25.10 samba 2:4.22.3+dfsg-4ubuntu2.1 Ubuntu 25.04 samba 2:4.21.4+dfsg-1ubuntu3.5 Ubuntu 24.04 LTS samba 2:4.19.5+dfsg-4ubuntu9.4 Ubuntu 22.04 LTS samba 2:4.15.13+dfsg-0ubuntu1.10 In general, a standard system update will make all the necessary changes.

References

https://ubuntu.com/security/notices/USN-7826-1

CVE-2025-10230, CVE-2025-9640

Severity
critical
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-7826-1

Package Information

https://launchpad.net/ubuntu/+source/samba/2:4.22.3+dfsg-4ubuntu2.1 https://launchpad.net/ubuntu/+source/samba/2:4.21.4+dfsg-1ubuntu3.5 https://launchpad.net/ubuntu/+source/samba/2:4.19.5+dfsg-4ubuntu9.4 https://launchpad.net/ubuntu/+source/samba/2:4.15.13+dfsg-0ubuntu1.10

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